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Hasan Can Midi
AuthorHasan Can Midi

1.2 PureTech Wet Belt Fix: Pro Chain Timing Chain Conversion Kit

1.2 puretech

One of the most debated topics in the automotive world in recent years has undoubtedly been the "wet timing belt" issue found in Stellantis Group's (Peugeot, Citroën, Opel, DS) 1.2 PureTech engines. Over time, the timing belt can wear out and begin to disintegrate, clogging the engine's oil pump and potentially leading to severe engine damage—turning ownership into a nightmare for many drivers.

While Stellantis has addressed this issue in its new-generation (Gen 3) engines by switching to a factory-installed timing chain system, owners of older-generation 1.2 PureTech engines may finally have a permanent independent solution on the horizon: the Pro Chain Timing Chain Conversion Kit.

Here's everything you need to know about this system developed by the Dutch engineering company Pro Chain.

A "Bolt-On" Solution That Requires No Engine Modifications

The biggest advantage of the kit developed by Pro Chain is that it requires no cutting, machining, or modifications to the engine block. The system completely replaces the factory wet timing belt setup with a lifetime timing chain solution.

So, what's included in the kit?

The conversion kit contains everything required for the upgrade, including a timing chain, sprockets, chain guides, a hydraulic tensioner, and a dedicated oil supply line designed to lubricate the new timing chain system.

There is also good news for mechanics: the installation procedure closely follows the original timing belt replacement process and can be completed using the same engine timing tools already used for standard timing belt service.

Available Only to Professional Workshops

There is one very important detail worth mentioning. According to Pro Chain's official FAQ page, these kits are not sold directly to private individuals. Orders are available exclusively to authorized workshops and automotive professionals through a B2B (Business-to-Business) sales model.

The company states that this restriction is intended to prevent incorrect timing installation by DIY mechanics working in home garages and to ensure the engine can be installed correctly and safely.

1.2 Puretech

1.2 Puretech

Release Date and Expected Price

The product is currently available for pre-order, with a limited number of units allocated for the first production batch.

Deliveries are expected to begin during the second half of 2026, although the timeline may vary depending on production schedules.

While no official retail price has been announced yet, several European automotive media outlets estimate that the kit itself will cost between €600 and €950 before taxes.

Once professional installation costs are added, the total price is expected to be comparable to a standard timing belt replacement performed by an authorized workshop (approximately €1,000–€1,500 / £1,000–£1,500).

In other words, this permanent solution is expected to remain competitively priced compared to a conventional timing belt replacement.

Is My Vehicle Compatible? (Engine Code Check)

Pro Chain has initially developed this conversion kit for turbocharged 1.2 PureTech engines.

To determine whether your vehicle is compatible, you can check one of the following:

  • Vehicle Registration or Technical Documentation: Full engine code (Example: EB2DT)
  • VIN (Vehicle Identification Number): The three-letter engine identifier located in the 6th, 7th, and 8th characters of the VIN (Example: HNZ)
  • Engine Block: The short engine code stamped directly onto the engine (Example: HN01)

According to the company's ordering page for turbocharged engines, the currently supported engine code groups are as follows:

  • EB2DT / HNZ / HN01
  • EB2DTS / HNY / HN02
  • EB2ADT / HNP / HN05
  • EB2ADTD / HNK / HN05
  • EB2ADTD / HNE / HN05
  • EB2ADTS / HNS / HN05
  • EB2ADTX / HNN / HN07

(If the engine code shown in your registration documents or identified through your VIN matches one of the groups above, your vehicle is compatible with this timing chain conversion kit.)

Conclusion

Although the second half of 2026 may still seem a long way off, this permanent solution for older-generation 1.2 PureTech engines has the potential to completely change both the reputation and resale value of these vehicles on the used car market.

By permanently eliminating concerns over the wet timing belt, this engineering solution could become one of the most significant aftermarket upgrades available for these engines. We will be closely following its release.

Frequently Asked Questions

It's a bolt-on timing chain system designed to permanently resolve the wet timing belt issue in Stellantis 1.2 PureTech engines without engine modifications.
Pro Chain kits are sold exclusively to authorized workshops and professional automotive businesses via a B2B model, not directly to individual consumers.
The kit's parts are expected to cost €600-€950. Deliveries are planned for the second half of 2026.
You can verify compatibility by checking the engine code in your vehicle's registration, VIN (e.g., EB2DT, HNZ), or directly on the engine block.